track 2: optical transmission sub-systems, systems and

Track 2: Optical Transmission Sub-systems, Systems and Technologies

Venue: Changan Room, 3F

October 25

13:30–15:30

M4B • SDM Transmission

Presider: Ning Wang, China Mobile, China

M4B.1 • 13:30 Invited

Submarine Transmission Using Space-Division Multiplexing, John D . Downie1, Xiaojun Liang1, Sergejs Makovejs1; 1Corning Inc, USA. We investigate space-division multiplexing approaches for high-capacity transmission in submarine systems and compare performance in terms of modeled capacity and relative system cost/bit . Multiple single-core fibers

with reduced diameter and multicore fibers are studied .


High Capacity Transmission Using Space Divi- sion Multiplexing, Ruben S . Luis1, Benjamin J . Puttnam1,

Georg Rademacher1, Yoshinari Awaji1, Hideaki Furukawa1; 1National Inst of Information & Comm Tech, Japan. We address the recent developments on S+C+L band, SDM transmission using homogeneous multicore fibers . We

evalu- ate amplification techniques including the use of novel doped fiber and distributed fiber amplifiers .

M4B.3 • 14:30

Fault Detection of Few Mode Fiber Based on Spatial Mode Transmission Reflection Analysis, Wenping Zhang1,

Feng Liu1, Zhenxing He1, Guijun Hu2; 1Wenzhou Univ., China; 2Jilin Univ., China. This paper proposes a fast and simple monitoring technique based on spatial mode transmission- reflection analysis for long-reach FMF-based

mode division multiplexing system . Results shows that the proposed method can achieve high fault localization

accuracy .

M4B.4 • 14:45

Role of the Acousto-Optic Coupling in a Step- Index Large Effective-Area Fiber with Intramo- dal Brillouin

Scattering, Han Zhu1, Shuo Chen1, Huiping Tian1; 1Beijing Univ of Posts & Telecom, China. We study the acousto-optic interaction in a step-index large effective-area fiber only contain- ing intramodal Brillouin scattering and find

the number and value of Brillouin peaks depends on the acousto-optic coupling coefficients . Experi- ments verifies

the conclusion .


Title to be Announced, Juhao Li1; 1Peking Univ., China. Abstract not available .

16:00–18:00

M5B • Optical Wireless Transmission Systems

Presider: Songnian Fu, Guangdong University of Technology, China


Turbulence Mitigation Employing Multimode Diversity Reception for Free-Space Optics Communications,

Yetian Huang1, Hanzi Huang1, Haoshuo Chen2, Juan Carlos Alvarado3, Qianwu Zhang1, Nicolas Fontaine2, Mikael

Mazur2, Roland Ryf2, Rodrigo Amezcua-Correa3, Yingxiong Song1, Yingchun Li1, Min Wang1; 1Shanghai Univ.,

China; 2Nokia Bell Labs, USA; 3Univ. of Central Florida, USA. We review our demonstration comparing the performance with and without employing multimode diversity reception under a laboratory- simulated isotropic

turbulence, and our demonstration on an elliptical-aperture multimode diversity receiver to mitigate the impairment

from anisotropic turbulence .

M5B.2 • 16:30

3 Gbit/s Wide Field-of-View Visible Light Communication System Based on White Laser Diode, Yuqi Hou1,

Chicheng Ma1, Dong Li1, Fangchen Hu1, Guoqiang Li1, Chao Shen1, Nan Chi1; 1Fudan Univ., China. A high-speed laser- based white light visible light communication (VLC) system with wide field-of-view (FOV) of 34° has been

demonstrated, enabling a data transmission rate exceeding 3 Gbit/s .

M5B.3 • 16:45

Experimental Demonstration of Free-Space Orbital-Angular-Momentum Mode-Group Multiplexing Under

Atmosphere Turbulence, Andong Wang1, Long Zhu1, Mingliang Deng1, Bing Lu1, Xiaojin Guo1; 1CQUPT, China. We experimentally utilize transmitter mode diversity in a free-space 144 Gbit/s orbital-angular-momentum

(OAM) mode-group multiplexed link, which can improve the received power and BER performance under

atmosphere turbulence .

M5B.4 • 17:00

Hybrid FSO/MMW Communication System With Active Link Switching Based on Weather Conditions, Lun

Zhao1, Shuai Zhang1, Xuanmin Pan1, Yejun Liu1, guo lei1; 1Chongqing Univ. of Posts and Telecommunications, China. This paper proposes a hybrid FSO/MMW communication system that can switch freely according to moni-

tored weather conditions . The proposed system can improve system performance in different weather conditions .

M5B.5 • 17:15

Adaptive Probabilistic Shaping of PAM-4 Using Polar Codes for FSO Communication, Xiaoyu Liu1, Jiafei Fang1,

Shilin Xiao1, Lizhuo Zheng1, Xiangyu Fu1, Weisheng Hu1; 1Shanghai Jiao Tong Univ., China. An adaptive probabilistic shaping scheme using polar codes is proposed to increase the capacity and combat the fading in FSO system, which outperforms

the uniform scheme and PAS-MMB 0 .39~0 .91dB and 0 .10dB respectively in BLER .

M5B.6 • 17:30

Physical-Layer Network Coding Based on Pre- coded OFDM in Relay-Assisted Visible Light Communications, Shuhua Song1,

Zhaoquan Fan1, Geyang Wang1, Chengju Hu1, Jian Zhao1; 1South China Univ. of Technology, China. We experimentally demonstrate physical-layer network coding (PNC) based on precoded OFDM in a 2 .16-Gbit/s asymmetric two-way-relay VLC

network, and show that PNC enables full-duplex transmission with significantly improved performance while OCT- P-OFDM

outperforms OFDM and DFT-S-OFDM .

M5B.7 • 17:45

A Modified Phase Diversity Algorithm-Based Adaptive Compensation for Orbital Angular Momentum

Wireless Optical Communication, Huan Chang1, Ran Gao1, Xiaoli Yin2, Fei Wang1, Sitong Zhou1, Qi Zhang1,

Dong Guo1, Fu Wang1, Zhipei Li1, Xiangjun Xin1; 1Beijing Inst. of Technol- ogy, China; 2Beijing Univ. of Posts and Telecom- munications, China. A modified phase diversity algorithm (MPDA)-based adaptive optics (MPDA-

AO) scheme of compensating for the OAM beam is proposed . Simulation results demonstrate that the proposed

MPDA-AO technique indeed de- contaminates the distorted OAM signaling beam .

October 26

08:30–10:00

T1B • High-Capacity Transmission Systems

Presider: Qunbi Zhuge, Shanghai Jiao Tong University, China

T1B.1 • 08:30 Invited

C+L Optical Amplifier Modeling Assisted by Machine Learning, Maria Vasilica Ionescu1, Amirhossein

Ghazisaeidi1, Jeremie Renaudier1; 1Nokia Bell Labs France, France. Machine learning can provide highly accurate models of amplifier gains as a function of pump powers . We discuss the implementation approaches and challenges

in determining the best-fit ML model of an optical amplifier .


Enabling Technologies and Experiments on Ultra-Wideband Amplified Transmission Sys- tems, Lidia

Galdino1; 1Univ. College London, UK. Challenges and solutions in experimentally demonstrate ultra-wideband (UWB) optical transmission are described . The description of theoretical models and metrics, together with

different approaches for UWB transmission system optimisation is proposed and investigated .

T1B.3 • 09:30

Low-Noise Amplification and Equalization of Dissipative Kerr Soliton Microcomb Lines via Laser Injection

Locking, Boyuan Liu1, Qiang Zhang1, Xinjie Han1, Yong Geng1, Kun Qiu1, Heng Zhou1; 1Univ of Electronic Science & Tech China, China. We demonstrate optical injection locking to amplify Kerr soliton comb lines for high

speed optical communications, excellent results are achieved regarding comb power amplification, signal-to-noise

ratio enhancement and bit-error rate, outperforming conventional fiber amplifier .

T1B.4 • 09:45

Single-Carrier 800 Gbit/s and 1.2 Tbit/s Trans- mission Using 96 GBaud Commercial Optoelec- tronic

Components, Qiang Zheng1, Hong Yang1, Longbao Wang1, Zhuopeng Xiao1, Huijian Zhang1; 1HiSilicon Optoelectronics Co., Ltd, China. Using commercial optoelectronic components we experimentally demonstrate an

800 Gbit/s/lambda system with 96 GBaud 32QAM . The BER floor is 9e-5 and the receiver sensitivity is -20 .7

dBm, which may support several DCI applications .

10:30–12:00

T2B • Machine Learning in Optical Networks

Presider: Danshi Wang, Beijing University of Posts & Telecom, China


Failure Location and Prediction With Cross- Layer AI in Self-Optimized Optical Networks (SOON), Yongli

Zhao1, Ke Tian1, Ying Wang2, Bing Zhang1, Zhuotong Li1, Zipiao Zhao1, Jie Zhang1; 1Beijing Univ of Posts &

Telecom, China; 2State Grid Information & Telecommunication Company, China. Failure location and prediction are always important issues in optical transport networks, which can be resolved by cross-layer AI proposed in

self-optimized optical networks . Some related works and experiment results have been given in this paper .

T2B.2 • 11:00

Machine Learning Assisted Accurate Estimation of QoT Impairments of Photonics Switching System on 400ZR,

Ihtesham Khan1, Lorenzo Tunesi1, Muhammad Umar Masood1, Enrico Ghil- lino2, Paolo Bardella1, Andrea Carena1, Vittorio

Curri1; 1Politecnico di Torino, Italy; 2Synopsys, USA. We propose a machine learning-based technique that accurately estimates quality-of- transmission (QoT) impairments of an optical switch on 400ZR . The proposed scheme works

in an entirely agnostic way reduces inaccuracy in QoT impairments estimation by 1 .5dB .

T2B.3 • 11:15

Machine Learning Assisted Hardware Finger- print Identification for TDM-PON From Eye- Diagram,

Huiyuan Gong1, Mengfan Cheng2,3, Weidong Shao2,3, Hongyu Li2,3, Lei Deng2,3, Qi Yang2,3, Deming Liu2,3; 1Wuhan Research Inst. of Posts and Telecommunications, China; 2Research Inst. of Huazhong Univ. of Science and

Technol- ogy in Shenzhen, China; 3National Engineering Laboratory for Next Generation Internet Access System (NGIA), School of Optical and Electronic Information, Huazhong Univ. of Science and Technology (HUST), China.

We propose and experimentally demonstrate a hardware identity authentication technique for TDM-PON based on

feature identification from eye diagram . The results show that the recognition accuracy can be up to 99% .

T2B.4 • 11:30

Predictive Uncertainty Aware Active Learning for Regression-Based QoT Estimation in Optical Networks,

Zheng Li1, Zhiqun Gu1, Jiawei Zhang1, Yuhang Zhou1, Yuefeng Ji1; 1Beijing Univ. of Posts and Telecomm, China. We propose an active learning strategy for regression-model-based QoT estimation to achieve higher accuracy

with fewer samples . Results show that our strategy decreases 35 .8% MSE on average than traditional method with

the restricted sample size .

T2B.5 • 11:45

Excellent Performance Robustness of Flexible Drop Operations of DSP-Switched ROADMs Ex- cluding

Optical Filters and O-E-O Conversions, Mingliang Deng1, Zhirui Luo1, Zhibo Xing1, Timera Mamadou1, Jingwei

Shi1, Lian Qing1, Jiacheng Bai1; 1CQUPT, China. DSP-Switched ROADM drop operation performances are extensively explored against variations in MZM operating characteristics . Numerical results show that the drop

operations have excellent performance robustness, which can be further improved with longer digital filter lengths.

13:30–15:30

T3B • Advanced Modulation Formats

Presider: Jianjun Yu, Fudan University, China


Nonlinearity-Tolerant Multidimensional Modulation Formats for High Speed Optical Communications, Bin

Chen1; 1Hefei Univ. of Technology, China. Performance trade-offs between linear shaping and nonlinear tolerance of the recently introduced 4D and 8D modulation formats are investigated . Numerical simulations and experiments

show an increased nonlinear tolerance and improved transmission distance with respect to coventional modualtion

formats.


Symbol-Pattern-Dependent Adaptive Equalization and Maximum Likelihood Sequence Estimation with a

Common Look-up-Table, Yi Cai1; 1Soochow Univ., USA. By employing a common look-up-table, we incorporate

the feature of symbol correlation into both adaptive equalization and maximum likelihood sequence estimation .

The scheme upgrades the transmission technology to a multi-symbol-oriented pattern- dependent equalization and

detection regime .

T3B.3 • 14:30

A Constellation-Shaped 127QAM Scheme Based on Geo- metric Shaping, Xiangyu Liu1, Qi Zhang1, Ran Gao2, Xiangjun

Xin1, Xishuo Wang1, Huan Chang2, Bingchun Liu3, Wenmao Zhou1, Feng Tian1, Qinghua Tian1, Zhipei Li2; 1Beijing

Univ. of Posts and Telecomm, China; 2School of information and electronics, Beijing Inst. of Technology, China; 3School of Man- agement Tianjin Univ. of Technology, China. A novel constellation-shaped 127QAM scheme based on geometric-shaping

is proposed . In a 140-Gb/s simulation system, the proposed scheme has a 0 .87dB OSNR gain and a 186km transmission- distance

gain at 2e-2 BER, compared with uniform-128QAM .

T3B.4 • 14:45

Gaussian Mixture Model Clustering Algorithm for a Proba- bilistic Shaping 64QAM Coherent Optical

Communication System, Hui Xu1, Yongjun Wang1, Chao Li1, Xiangjun Xin1; 1Beijing Univ. of Posts and Telecommunications, China. In this paper, a Gaussian Mixture Model (GMM) clustering algorithm with initial means

is proposed . The experiment results show that the proposed algorithm can significantly improve the performance

of probabilistic shaping (PS) 64QAM .

T3B.5 • 15:00

Artificial Neural Networks-Assisted Geometric Shaping Optimization Including Gray-Like Mapping, Xiang Liu1,2,

Jiao Zhang1,2, Min Zhu1,2, Bingchang Hua2, Yucong Zou1,2, Qinru Li1, Yingxin Wei1, Weidong Tong1, Yuancheng Cai1,2,

Mingzheng Lei2, Liang Tian2, Aijie Li2; 1Southeast Univ., China; 2Purple Mountain Laboratories, China. Artificial Neural networks- based geometric shaping is proposed that includes Gray-like mappings . Over 0 .2dB gain in GMI and BER

improvement is achieved over a wide range of SNRs without requiring any presumed model for the channel .

T3B.6 • 15:15

Up to 16384-QAM IFoF Transmission With DML Based on 2-Bit High-Pass Delta-Sigma Modulation, Yixiao

Zhu1, Longjie Yin1, Qi Wu1, Lina Man1, Yiming Tao1, Weisheng Hu1; 1Shanghai Jiao Tong Univ., China. We design

a 2-bit high-pass delta-sigma modulator based on 4th-order cascaded resonator feedback structure, and experimentally demonstrate IFoF transmission of 1 .88GHz bandwidth 16384-QAM in 32Gb/s DML-DD link . 0

.58% EVM is achieved after 20km SSMF transmission .

T3B.7 • 15:30

QPSK-Partition Assisted Frequency Offset Estimation for Probabilistically Shaped Coherent Optical

Communication Systems, Xue Tang1,2, Lishan Yang1,2, Hengying Xu1,2, Chenglin Bai1,2, Weibin Sun1,2, Xinkuo

Yu1, Lingguo Cao1, Xiuhua Lv1, peng Qin1; 1School of Physics Science and Information Engineering, Liaocheng

Univ., China; 2Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Liaocheng Univ., China. A QPSK-partition assisted frequency offset estimation scheme is proposed for probabilistically shaped

coherent systems . High FOE accuracy can be achieved under conditions of moderate/strong shaping . The complexity

of this scheme is reduced to O(N) .

T3B.8 • 15:45

Pilot-Free Bayesian Filter for Phase Noise Correction of 64QAM CO-OFDM Superchannel, Lakshmi

Narayanan Venkatasubramani1, Yi Lin2, Colm Browning2, Anirudh Vijay1, R David Koilpillai1, Liam Barry2,

Deepa Venkitesh1; 1Indian Inst. of Technology Madras, India; 2Dublin City Univ., Ireland. We experimentally demonstrate the use of a pilot-free phase noise mitigation algorithm for a gain-switched comb-based 480 Gbps 64QAM

CO-OFDM superchannel system using weighted-blind estimation and Bayesian filter with 18% potential improvement

in spectral efficiency .

October 27

08:30–10:00

W1B • IM-DD Systems

Presider: Ning Liu, Soochow University, China

W1B.1 • 08:30

Transmission of 214 Gbps IM/DD PAM-4 Over 10 km Based on 25 GHz-Class EML Using Low-Power

Nonlinear MLSE, Huanlu Li1, Weiyu Wang1, Jian Tang1, Haiyang Zhang1, Zhilei Huang1, Qinyu Zhou1, Guoxi

Wang1, Ming Li2, Yuchun Lu1; 1Huawei Technologies, China; 2Inst. of Semiconductors, CAS, China. 214 Gbps per lane PAM-4 transmissions are demonstrated with 25 GHz class commercial EML . Employing an improved MLSE

algorithm enables the system to meet 10 km transmission with under KP4-FEC BER threshold requirement . The

experiment results show the potential of commercial EML for 800 GbE application .

W1B.2 • 08:45

Experimental Demonstration of 50-Gb/s/λ O-Band CWDM Direct-Detection Transmission Over 100-km

SMF, Yang Hong1, Natsupa Taengnoi1, Kyle Bottrill1, Naresh Thipparapu1, Yu Wang1, Jayanta Sahu1, David

Richardson1, Periklis Pet- ropoulos1; 1Univ. of Southampton, UK. We demonstrate the first single-sideband 50-Gb/s/λ coarse WDM direct-detection transmission in the O-band . It is shown that the Kramers-Kronig-detection

assisted single-sideband transmission exhibits significant OSNR sensitivity improvements over double-sideband

transmission, enabling up to 100-km reach .

W1B.3 • 09:00

Performance Enhanced Gerchberg-Saxton Algorithm Based Electrical Disper- sion Pre-Compensation for

Intensity-Modulation and Direct-Detection System, Dongdong Zou1, Wei Wang1, Mingzhu Yin1, Qi Sui2,

Zhaohui Li1, Fan Li1; 1Sun Yat-Sen Univ., China; 2Southern Laboratory of Ocean Science and Engineering, China. A performance enhanced Gerchberg-Saxton algorithm based dispersion pre-compensation scheme is proposed for

IM-DD system . The simulation results show that 56-GBaud PAM-4 signal is successfully transmitted over 400-km

SMF in C-band enabled by the proposed scheme .

W1B.4 • 09:15

EML-Based IM/DD Transmission Over Dispersion-Uncompensated Links Using Low-Complexity Optimized

Detection, Shuangyue Liu1, Han Cui1, Xizi Tang1, Yueming Lu1, Yaojun Qiao1; 1Beijing Univ Posts & Telecommunications, China. We experimentally demonstrate an EML-based 40-Gbit/s OOK IM/DD transmission over 120-

km SSMF using a low-complexity optimized detection algorithm, which requires no multiplication during the update of

survival path, simultaneously showing its superiority against chromatic dispersion .

W1B.5 • 09:30 Invited

AI for Fast and Accurate Optical Fiber Channel Modeling, Lilin Yi1, Hang Yang1, Ze- kun Niu1, Shilin Xiao1,

Weisheng Hu1; 1Shanghai Jiao Tong Univ., China. Deep learning is investigated to fast learn optical fiber channel with low complexity . The modeling shows robust generalization abilities under different optical launch powers,

modulation formats, input signal distributions and transmission distance up to 1000km .

10:30–12:00

W2B • Visible Light Communication and Positioning Systems

Presider: Nan Ye, Shanghai University, China

W2B.1 • 10:30

ANN-Based Anti-Tilt High-Precision Indoor Positioning System Using Triple-LED and Security Camera, Shuang

Zhao1, Dahai Han1, Xiaoyun Li1, Peiyu Jia1, Shengnan Li1, Min Zhang1; 1Beijing Univ. of Posts and Telecomm, China. In this paper, an artificial neural network (ANN) based high-precision positioning system using triple-LED and security camera

is proposed, which achieves a mean positioning error (MPE) of 0 .87 cm in a space of 1m×1m×1m .

W2B.2 • 10:45

An Integrated Visible Light Communication and Positioning CDMA System Implementation Based on

OZCZ Code, Danyang Chen1, Jianping Wang1, Huimin Lu1, Lifang Feng1, Jianli Jin1; 1Univ of Science and Technology Beijing, China. A novel integrated visible light communication and positioning CDMA system based on

OZCZ code is proposed . The results show that the OZCZ code is better than conventional code considering the system

BER and positioning accuracy .

W2B.3 • 11:00

Visible Light Communication Channel Modeling by Experiment-Data-Driven Deep Learning, Yanwen Zhu1,

Dahai Han1, Chuan Yang1, Shengnan Li1, Xiaoyun Li1, Min Zhang1; 1Beijing Univ. of Posts and Telecommunications, China. An experiment-data- driven channel-modeling method based on bidirectional long

short-term memory is proposed for visible light communication channels . The resulting mean absolute error is stable

in a small range, reaching 0 .009 without occupying spectrum resources .

W2B.4 • 11:15

Characterization of a Practical 3-m VLC System Using Commercially Available Tx/ Rx Modules, Chen Chen1,

Yungui Nie1, Xin Zhong1, Min Liu1, Binbin Zhu2; 1Chongqing Univ., China; 2Shenzhen Hua Chuang Chip Lighting Co., Ltd, China. We experimentally characterize the performance of a practical 3-m VLC system using commercially

available Tx/Rx modules . Results show that the achievable rates are at least 120 and 320 Mbit/s when applying OOK

and OFDM, respectively .

W2B.5 • 11:30

A 3D Visible Light Positioning and Orienteering Scheme Using Two LEDs and a Pair of Photo-Detectors,

Xiaobai Yang1, Zile Jiang2, Xiaodi You1, Jian Chen3, Changyuan Yu4, Yongcheng Li1, Mingyi Gao1, Gangxiang

Shen1; 1Soochow Univ., China; 2Nanjing Univ., China; 3Nanjing Univ. of Posts and Telecommunications, China; 4The Hong Kong Polytechnic Univ., Hong Kong. A 3D visible light positioning (VLP) scheme is proposed by referring to the distances between two luminaires and a pair of photo-detectors . VLP accuracy < 10 cm can be

achieved while offering terminal orientation information .

W2B.6 • 11:45

Multi-Access Indoor Optical Wireless Communications Enabled by MLC-NOMA and Direct Detection With

Kramers-Kronig Receivers, Jianghao Li1, Qi Yang2, Dai xiaoxiao2, Christina Lim1, Ampalavanapillai

Nirmalathas1; 1The Univ. of Melbourne, Australia; 2School of Optical and Electronic Information, Huazhong Univ. of Science and Technology, China. We propose a multiple access indoor optical wireless communication system

enabled by multilevel coding based non-orthogonal multiple access, which is shown by the simulation of a 2m

direct detection optical wireless link with Kramers-Kronig reception .

13:30–15:30

W3B • Systems with High Sensitivity

Presider: Nan Ye, Shanghai University, China


Phase-Sensitive Pre-Amplified Receiver for High Sensitivity Optical Communica- tions, Ravikiran Kakarla1; 1Univ. of Southampton, UK. A record sensitivity of 1 photon- per-bit achieved at 10Gbps using quadrature phase-shift keyed transmitter with 100% overhead forward error correction code and a phase-sensitive pre-amplified coherent

receiver with a noise figure of 1 .2 dB .

W3B.2 • 14:00

A Photon Limited SiPM Based Receiver for Internet of Things, Yangchun Li1, Yuanyuan Hua1, Robert Henderson1, Danial

Chitnis1; 1Univ. of Edinburgh, UK. We compared two photons counting readout methods on a SiPM based receiver . The results

show that integration method performs better BER in non-linear counts and 1Mbps is achieved under 9 .44×10-9W with 11 .78 photons per bit .

W3B.3 • 14:15

Observing Cross-Channel NLI Generation in Disaggregated Optical Line Systems, Elliot P . London1, Emanuele

E . Virgillito1, Andrea D’Amico1, Antonio Napoli2, Vit- torio Curri1; 1Politecnico di Torino, Italy; 2Infinera, Germany. We investigate spatially separated XPM generation in a wide variety of 400G-ZR+ 64GBd pump-and-

probe simulations, demonstrating the existence of a per-span upper bound that depends solely upon accumulated

dispersion .

W3B.4 • 14:30

Ultrahigh Resolution Narrow Linewidth Measurement Based on Brillouin Laser in a High Q Whispering

Gallery Mode Cavity, Yong Geng1, Boyuan Liu1, Qiang Zhang1, Xinjie Han1, Kun Qiu1, Heng Zhou1; 1Univ of Electronic Science & Tech China, China. We demonstrate ultrahigh resolution narrow linewidth measurement based

on Brillouin laser in a high Q Whispering gallery mode cavity . This new scheme can achieve a higher spectral

resolution and overcome the main drawbacks of conventional schemes .

W3B.5 • 14:45

Time Delay Measurement of Optical Fiber Link With Spatial Resolution, Xufeng Chen1, Shupeng Li1, Lihan

Wang1, Xiaohu Tang1, Xi Liu1, Jianbin Fu2, Xiangchuan Wang1, Yaoyao Shi1, Shilong Pan1; 1Nanjing Univ

Aeronautics & Astronautics, China; 2Suzhou LiuYaoSi Information Technologies Co., Ltd., China. Time delay measurement of optical fiber link with spatial resolution is proposed . A spatial resolution of 8 .176 cm and length

measurement precision of ± 0 .14 mm are achieved .

W3B.6 • 15:00

Physical Layer Cryptography Key Generation by Estimating Channel Character- istics Based on Neural

Network, Kun Wu1, Yuefeng Ji1, Hongxiang Wang1; 1BUPT, China. A physical-layer secure key generation scheme based on neural network is proposed . It can efficiently generate symmetric keys with high entropy,

adjustable generation rate under the transmission distance of 100 km and bit-rate of 100Gbps .

W3B.7 • 15:15

Physical-Layer Secure Key Distribution Scheme Based on Phase Noise in PSK/ QNSC, Shuang Wei1, YaJie

Li1, Kongni Zhu1, Chao Lei1, Yongli Zhao1, Jie Zhang1; 1Beijing Univ. of Posts and Telecommunications, China. A secure key distribution scheme with phase noise resisting the beam splitting attack in PSK/QNSC is proposed . The

highest key consistency rate 98 .4% and key generation rate 70 .41 Mbit/s are demonstrated over 50 km SSMF .

16:00–18:00

W4B • AdvaNced Direct Detection Techniques

Presider: Fan Zhang, Peking University, China


Title to be Announced, Alan Pak Tao Lau1; 1The Hong Kong Polytechnic Univ., Hong Kong . Abstract not available .

W4B.2 • 16:30

Phase Noise Compensation in Optical Carrier-Assisted Single-Sideband and Direct Detection PAM-4 System,

Dongxu Lu1, Jiahao Huo1, Jinhui Yuan1, Xian Zhou1, Keping Long1; 1Univ Sci & Tech Beijing (USTB), China. We propose a joint phase noise compensation scheme including SP-LMS and RPD-BPS algorithm in the optical carrier-assisted

SSB-DD PAM4 system with high spectral efficiency, which can tolerate 1-MHz laser linewidth at a BER of 3 .8e-3 .

W4B.3 • 16:45

Analysis and Compensation of Equalization-Enhanced Phase Noise in Carrier Assisted Differential Detection

System, Peng Qin1, Chenglin Bai1,2, Hengying Xu1,2, Lishan Yang1,2, Weibin Sun1,2, Xinkuo Yu1, Xiuhua Lv1, Xue

Tang1,2, Yanfeng Bi1, Xueyuan Luo1; 1School of Physics Science and Information Engineering, Liaocheng Univ., China; 2Shandong Provincial Key Laboratory of Optical Communication Sci- ence and Technology, Liaocheng Univ., China. In this paper, the influences of EEPN in the A-CADD and S-CADD systems are analyzed for the first time . Meanwhile,

we demonstrate the mitigation of the EEPN influence using ML and BPS phase compensation algorithms .

W4B.4 • 17:00

Comparison of Iterative Field Reconstruction Schemes for IM/DD PAM4 Signal Transmission, Masayuki

Matsumoto1, Takuya Takahashi1; 1Wakayama Univ., Japan. Iterative field reconstruction for electrical dispersion compensation in PAM4 IM/DD transmission system is studied . It is shown that using transmitted signal constraint in

the Gerchberg-Saxton iteration algorithm is effective in enhancing the convergence speed .

W4B.5 • 17:15

SSBI-Oriented MISO Equalizer in the Presence of O/E Front-end Frequency Response, Qi Wu1, Yixiao

Zhu1, Weisheng Hu1; 1ShangHaijaotong Univ., China. A customized algorithm is proposed to adaptively mitigate ISI and SSBI considering O/E front-end response simultaneously based on a MISO equalizer in SSB direct detection

system, and validated in 30GBaud SSB-32QAM 80km SSMF transmission experiment .

W4B.6 • 17:30

Fast WHT-Based Block Precoding for DMT Transmission, Ling Wang1, Ming Chen1, Gang Chen1, Aitao Deng1,

Hui Zhou1, Yi Liu2, Yun Cheng2; 1Hunan Normal Univ., China; 2Hunan Univ. of Humanities, Science and Technology, China. We experimentally compare DFT, OCT and WHT-based block precoding (BP), bit loading and

the traditional precoding techniques in a short-reach DMT system . A similar BER performance can be achieved with

the low-complexity fast WHT-based BP technique .

W4B.7 • 17:45

Precoding-Enabled Probabilistically-Shaped DMT Transmission With Average Signal Power Constraint,

Haimiao Long1, Ming Chen1, Long Zhang1, Gang Chen1, Ling Wang1, Yi Liu2, Yun Cheng2; 1Hunan Normal

Univ., China; 2Hunan Univ. of Hu- manities, Science and Technology, China. We experimentally investigate the PS-DMT system enabled by DFT, OCT and WHT-based precoding techniques under average transmit signal power

constraint . Up to 2 dB receiver sensitivity improvement can be achieved compared to the conventional PS-DMT .

Track 2: Optical Transmission Sub-systems, Systems and Technologies

Luoyang Room, 3F

13:30–15:30

M4H • Real-time Transmission and Quantum Communications

Presider: Zhiyu Xiao, Huawei Technologies Co Ltd, China

M4H.1 • 13:30 Invited

Real-Time, Software-Defined, Multi-Modulation Format, GPU-Based Receiver, Sjoerd P . van der Heide1,2, Ruben S

. Luis2, Sebastiaan Goossens1, Benjamin J . Puttnam2, Georg Radem- acher2, Ton Koonen1, Satoshi Shinada2, Yoshinari

Awaji2, Alex Alvarado1, Hideaki Furukawa2, Chigo M . Okonkwo1; 1Eindhoven Univ. of Technology, Netherlands; 2National Inst. of Informa- tion and Communication Technology (NICT), Japan. Real-time digital signal processing for IM/DD PAM-N and Kramers-Kronig coherent N-QAM is implemented on a commercial off-the-shelf GPU . Transmission

over 91 km of field-deployed fiber and a 10,000 km straight-line link is demonstrated .


Integration of Continuous-Variable Quantum key Distribu- tion and Coherent Optical Communication, Takuya

Hirano1; 1Gakushuin Univ., Japan. In this talk, we will review the present status of continuous-variable quantum key distribution, including optical configuration and security analysis, and would like to discuss future prospects for integration

with coherent optical communications .

M4H.3 • 14:30

A Real Time Implementation of 3-Stage Equalizer for Burst- Mode Digital QPSK Receivers of the Coherent

PON, Tao Zeng1, Zhixue He1, lingheng meng1, Feng Jiang1, Shaohua Yu1; 1State Key Laboratory of Optical Communication Technologies and Networks, China information and communication technology Group

Corporation, China. In this paper, we implement a real time 3-stage equalizer for burst-mode digital coherent

receivers in asynchronous PON upstream, and demonstrate a high performance multi-function preamble header . We

evalu- ate the performance of this architecture in the experiment .

M4H.4 • 14:45

Digital Emulation of Time-Varying PMD for Real-Time DSP Evaluations, Haorui Kan1, Hong Zhou1, Erik

Börjeson1, Magnus Karlsson2, Per Larsson-Edefors1; 1Dept. of Computer Science and Engineering, Chalmers Univ.

of Technology, Sweden; 2Pho- tonics Laboratory, Chalmers Univ. of Technology, Sweden. We introduce a digital PMD emulator to accelerate BER analysis of coherent receiver DSPs . The emulator creates parameteriz- able, time-

varying impairments, which we use to demonstrate real-time analysis of a CMA equalizer .


Real-Time MIMO Detection Over SDM Fibers: Feasibility and Challenges, Shohei Beppu1, Noboru

Yoshikane1; 1KDDI Research, Inc., Japan. For practical deployment of SDM transmission systems with few-mode or coupled-core fibers, hardware implementation of a real-time MIMO DSP is essential . We show SDM

transmission experiments with a real-time MIMO DSP and discuss challenges .

16:00–18:00

M5H • Machine Learning for Optical Communication

Presider: Yunbo Li, China Mobile Communication Corporation R, China


Physics-Based Deep Learning for Fiber-Optic Communica- tion Systems, Christian Häger1; 1Chalmers Tekniska Högskola, Sweden. We will give an introduction and overview of recent advances in designing efficient nonlinear

equalization schemes by combining insights about the signal propagation dynamics in optical fibers with novel data-

driven optimization techniques .


Title to be Announced, Meng Xiang1; 1 Guangdong University of Technology, China. Abstract not available.

M5H.3 • 17:00

Attention-Based Neural Network Equalization in Fiber-Optic Communications, Abtin Shahkarami1, Mansoor I .

Yousefi1, Yves Jaouen1; 1Telecom Paris, France. An attention mechanism is integrated into neural network-based equalizers to prune the fully-connected output layer . For a 100 GBd 16-QAM 20 x 100 km SMF transmission, this approach

reduces the computational complexity by ~15% in a CNN+LSTM model .

M5H.4 • 17:15

Sparsely-Connected Cascade Recurrent Neural Network- Based Nonlinear Equalizer for a 100-Gb/s PAM4

Optical Interconnect, Zhaopeng Xu1, Shuangyu Dong1, Chenxin Jiang1, Jonathan H . Manton1, William Shieh1; 1Univ. of Melbourne, Aus- tralia. A sparsely-connected cascade recurrent neural network is proposed based on pruning which enables

a 100-Gb/s 15-km PAM4 transmission using a bandwidth-limited DML . Compared with the fully-connected counterpart, 21

.66% connections are saved without degrading system performance .

M5H.5 • 17:30

Experimental Evaluation of Computational Complexity for Different Neural Network Equalizers in Optical

Commu- nications, Pedro Jorge Freire de Carvalho Souza1, Yevhenii Osadchuk1, Antonio Napoli2, Bernhard

Spinnler2, Wolfgang Schairer2, Nelson Costa3, Jaroslaw E . Prilepsky1, Sergei K . Tu- ritsyn1; 1Aston Univ., UK; 2Infinera, Germany; 3Infinera, Portugal. Addressing the neural network-based optical channel equalizers, we quantify the trade-off between their performance and complexity by carrying out the comparative analysis of several

neural network architectures, presenting the results for TWC and SSMF set-ups .

M5H.6 • 17:45

A Ditherless Bias Control Technique for IQ Mach-Zehnder Modulator Based on Partial Derivative and Neural

Network, Jinyang Wu1, Jiaqi Huang1, Dai Xiaoxiao1, Qi Yang1, Mengfan Cheng1, Lei Deng1, Deming Liu1; 1Huazhong Univ. of Science and Technology, China. We proposed a ditherless automatic bias control algorithm based on partial derivative estimation and neural network . Simulation results show the precision for bias IQ and P

can achieve 0 .5% and 0 .1% of 2Vπ, respectively .

October 26

08:30–10:30

T1H • Coherent Transceivers and Transmission

Presider: Bin Chen, Hefei University of Technology, China

T1H.1 • 08:30 Invited

Large Capacity, High Spectral Efficiency and Long Distance Optical Transmission Based on High-Order

QAM, Jianjun Yu1, Miao Kong1, Kaihui Wang1, Junjie Ding1, Yi Wei1; 1Fudan Univ., China. We summarized our recent research results and achieved high-level QAM-based large-capacity, high-spectrum efficiency, and long-

distance transmission through advanced digital signal processing


Coded and Modulation of Coherent 800G per Lambda DWDM Transmission, Zhiyu Xiao1; 1Huawei Technologies Co Ltd, USA. For 800G transmission, an appropriate modulation and coding scheme must be selected

to achieve the expected SE and performance . In this paper, the application of different modulation and coding

techniques on 800G is introduced to obtain the optimal modulation and coding techniques under different target SE

definitions .

T1H.3 • 09:30

16-Tb/s (80×200-Gb/s) Nyquist DP-QPSK Transmission Over 10,000-km G.654E Fiber Using Silicon-Based

Integrated Coherent Transceiver, Chao Yang1, Ming Luo1, Zhixue He1,3, Lei Wang2,1, Xi Xiao1,2, Shaohua

Yu1,2; 1China Information Communication Technologies Group Corporation, China; 2National Information

Optoelectronics Innovation Center, China; 3PengCheng National Laboratory, China. We use a high-bandwidth silicon-based integrated coherent transceiver in the long-haul fiber transmission systems . 16-Tb/s (80×200- Gb/s)

Nyquist DP-QPSK transmission over 10,000-km G .654E fiber with Raman amplification is experimentally

demonstrated .

T1H.4 • 09:45

Simultaneous Characterization of Polarization Skews and Electrical Channel Skews in Optical Coherent

Transceivers, Wing-Chau Ng1, Yongfu Wang2, Xuefeng Tang1, Zhuhong Zhang1, Chuandong Li1; 1Huawei

Technologies Canada, Canada; 2Huawei Technologies, China. An accurate calibration algorithm is proposed to simultaneously measure polarization and arbitrary electrical channel skews at transmitter and receiver . Experiment

shows its robustness to polarization rotation, with ±0 .6 ps error over 30 ps range .

10:30–12:00

T2H • DML-Enabled Systems

Presider: TBA


Tb/s Transmission in Sustainable and Flexible Metro Net- works Using Long-Wavelength VCSELs,

Pierpaolo Boffi1, Paola Parolari1, Alberto Gatto1, Mariangela Rapisarda1, Federico Lipparini1, Michela Svaluto

Moreolo2, Josep Maria Fabrega2, Christian Neumeyr3, Giovanni Delrosso4, Benjamin J . Puttnam5, Massimiliano

Severi6, Giorgio Parladori6; 1Politecnico di Milano, Italy; 2Centre Tecnològic de Telecomunicacions de Catalunya

(CTTC/CERCA), Spain; 3Vertilas GmbH, Germany; 4VTT Techni- cal Research Center of Finland, Finland; 5NICT

- National Inst. of Information and Communications Technology, Japan; 6SM Optics, Italy. Tb/s transmission for future metropolitan networks is demonstrated thanks to an innovative photonic cost-effective and energy-efficient

transmitter module integrating multiple directly modulated long-wavelength InP VCSELs targeting more than 50-

Gb/s per channel, together with multi-core fiber propagation .

T2H.2 • 11:00

Demonstration of 100Gb/s/λ 32QAM-DMT Transmission in Intra-DCI Using 10G-Calss EML Modulator

and 4-bit DAC, Mingzhu Yin1, Zhibin Luo1, Dongdong Zou1, Xingwen Yi1, Zhaohui Li1, Fan Li1; 1Sun Yat-Sen Univ., China. Enabled by fast-precoding DFT-S for PAPR suppression and noise-shaping technique for redistribution

of quantization-noise in signal quantization with 4-bit DAC, a low-cost 100Gb/s short-haul Intra-DCI using 10G-

class EML modulator and 4-bit DAC is experimentally demonstrated in this paper .

T2H.3 • 11:15

Crosstalk and Power Fading in a WDM-RoF Based MFN Using Directly Modulation 3s-DBR Laser,

Haixuan Xu1, Yao Zhu1, Yuze Wu1, Colm Browning2, Liam Barry2, Yonglin Yu1; 1Wuhan National Laboratory

for Optoelectronics, Huazhong Univ. of Science and Technology, China; 2The RINCE Inst., Dublin City Univ., Ireland. We experimentally investigate a RoF-based MFH for 5G system with a tunable 3s-DBR laser .

Transmission performance of 12 channels and 16 channels of 211 MHz-bandwidth f-OFDM signals with 16QAM

over SSFM are evaluated and compared .

T2H.4 • 11:30

High-Speed Spectral-Scanning FMCW LiDAR System Based on Tunable VCSEL, Yaqi Han1, Zhi Li1, Lican Wu1,

H .Y . Fu1; 1Tsinghua-Berkeley Shenzhen Inst., China. We demonstrate an ultrafast spectral-scanning LiDAR system by utilizing a compact tunable VCSEL . The proposed system can realize the two-dimensional beam scanning with 8 kHz

sweep rate and millimeter-level ranging precision simultaneously .

T2H.5 • 11:45

Demonstration of All-Digital Burst Clock and Data Recovery for Symmetrical Single-Wavelength 50G PON

Application Using Low-Bandwidth Optics, Jiao Zhang1,2, Qingyi Zhou1, Min Zhu1,2, Xiang Liu1,2, Bingchang

Hua2, Yuancheng Cai1,2, Mingzheng Lei2, Liang Tian2, Yucong Zou2, Aijie Li2; 1South- east Univ., China; 2Purple Mountain Laboratories, China. We experimentally demonstrated all-digital burst clock and data recovery for symmetrical 50-Gb/s/λ PON using low-bandwidth optics over the same fiber link to support over 26 dB power

budget . The performances of uplink burst-mode is studied .

13:30–15:30

T3G • Coherent DSP

Presider: Yi Cai, Soochow University, China

T3G.1 • 13:30 Tutorial

Ultralong-Distance Undersea Transmission Systems, Jin-Xing Cai1; 1TE SubCom, USA. Abstract not available .

T3G.2 • 14:15

Low-Complexity Frequency Offset Estimation Based on Training Symbol for NFDM Systems, Yanfeng Bi1,

Hengying Xu1,2, Chenglin Bai1,2, Weibin Sun1,2, Lishan Yang1,2, Xinkuo Yu1, Xueyuan Luo1, Lingguo Cao1; 1School of Physics Science and Information Engineering, China; 2Shandong Provincial Key Laboratory of Optical Communication Science and Technology, China. We propose a low-complexity frequency offset estimation scheme

based on training symbol for NFDM systems . It achieves FOE error of less than 1MHz within range of ±1GHz, whose

complexity is related with the training symbol .

T3G.3 • 14:30 Invited

Title to be Announced, Amirhossein Ghazisaeidi1; 1Nokia Bell Labs France, France. Abstract not available .

T3G.4 • 15:00

Mitigated Residual Phase and Performance Enhancement Using Improved Stokes Space Polarization

Demultiplexing, Jie Tang1, Wanzhen Guo1, Jian Zhao1; 1South China Univ. of Technology, China. We investigate improved stokes-space polarization demultiplexing (SS-PDM) in coherent systems using Kalman-based CPR and

show that the improved SS-PDM mitigates random phase jumps in conventional SS-PDM and thus improves the

performance of the following CPR .

T3G.5 • 15:15

Receiver IQ Imbalance and Skew Compensation for High Order Modulation Formats by Frequency

Domain 4x2 MIMO, Liang Junpeng1,2; 1ZTE Corporation, China; 2State Key Laboratory of Mobile Network and Mobile Multimedia Technol- ogy, China. We propose a modulation formats independent frequency domain 4x2

multi-input and multi-output (MIMO) equalizer, which can compensate receiver inphase and quadrature (IQ)

imbalance and skew with lower complexity than time domain (TD) 4x2 MIMO .

track 2: optical transmission sub-systems, systems and

Documents